MFET 374, Manufacturing Integration I1/19/2010SLC-500 Fundamentals3SLC-500 Program FilesProgram Files• SLC-500 programs are stored and organized into program files• In a given project, it’s possible to have multiple program filesFSLC500tfil6• For a SLC-500 system, program files are numbered 0, 1, 2, … , 255

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MFET 374, Manufacturing Integration I1/19/2010SLC-500 Fundamentals5Program Files• File 3 – 255, Subroutine programsEach ladder subroutine is created by the programme– Each ladder subroutine is created by the programmer– Ladder subroutines are called by the main ladder programBdf ltthlddb ti9– By default, there are no ladder subroutinesProgram filesLooking at program files using the RSLogix 500 softwareProgram files for a SLC-500 project10The “project tree”

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MFET 374, Manufacturing Integration I1/19/2010SLC-500 Fundamentals6SLC-500 Addressing –Discrete I/OSLC-500 Addressing – Discrete I/O• The PLCs addressing scheme allows you to reference I/O and data table words• The SLC-500 addressing scheme is not the same as the PLC-5 addressing schemeThis section will focus on discrete I/O (analog12• This section will focus on discrete I/O (analog I/O is examined in the last section)